private static void SafeChangeDisplaySettingsEx(string lpszDeviceName, ref DeviceMode mode, IntPtr hwnd, uint dwflags, IntPtr lParam)
{
int result = ChangeDisplaySettingsEx(lpszDeviceName, ref mode, hwnd, dwflags, lParam);
switch (result)
{
case 0:
return; //DISP_CHANGE_SUCCESSFUL
case 1:
throw new Exception("The computer must be restarted for the graphics mode to work."); //DISP_CHANGE_RESTART
case -1:
throw new Exception("The display driver failed the specified graphics mode."); // DISP_CHANGE_FAILED
case -2:
throw new Exception("The graphics mode is not supported."); // DISP_CHANGE_BADMODE
case -3:
throw new Exception("Unable to write settings to the registry."); // DISP_CHANGE_NOTUPDATED
case -4:
throw new Exception("An invalid set of flags was passed in."); // DISP_CHANGE_BADFLAGS
case -5:
throw new Exception("An invalid parameter was passed in. This can include an invalid flag or combination of flags.");
// DISP_CHANGE_BADPARAM
case -6:
throw new Exception("The settings change was unsuccessful because the system is DualView capable."); // DISP_CHANGE_BADDUALVIEW
}
}
private static extern int ChangeDisplaySettingsEx(string lpszDeviceName, ref DeviceMode mode, IntPtr hwnd, uint dwflags, IntPtr lParam);
public void Unload()
{
if (State == MirrorState.Running)
Stop();
if (State == MirrorState.Connected)
Disconnect();
if (State != MirrorState.Loaded)
return;
var deviceMode = new DeviceMode();
deviceMode.dmSize = (short)Marshal.SizeOf(typeof(DeviceMode));
deviceMode.dmDriverExtra = 0;
deviceMode.dmFields = (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_POSITION);
var device = new DisplayDevice();
device.CallBack = Marshal.SizeOf(device);
deviceMode.dmDeviceName = string.Empty;
uint deviceIndex = 0;
while (EnumDisplayDevices(null, deviceIndex, ref device, 0))
{
if (device.DeviceString.Equals(driverName))
break;
deviceIndex++;
}
Debug.Assert(_registryKey != null);
_registryKey.SetValue("Attach.ToDesktop", 0);
_registryKey.Close();
deviceMode.dmDeviceName = driverMiniportName;
if (deviceMode.dmBitsPerPel == 24) deviceMode.dmBitsPerPel = 32;
#region This was CommitDisplayChanges
SafeChangeDisplaySettingsEx(device.DeviceName, ref deviceMode, IntPtr.Zero, CDS_UPDATEREGISTRY, IntPtr.Zero);
SafeChangeDisplaySettingsEx(device.DeviceName, ref deviceMode, IntPtr.Zero, 0, IntPtr.Zero);
#endregion
State = MirrorState.Idle;
}
public bool Load()
{
if (State != MirrorState.Idle)
throw new InvalidOperationException("You may call Load only if the state is Idle");
var device = new DisplayDevice();
var deviceMode = new DeviceMode { dmDriverExtra = 0 };
device.CallBack = Marshal.SizeOf(device);
deviceMode.dmSize = (short)Marshal.SizeOf(deviceMode);
deviceMode.dmBitsPerPel = Screen.PrimaryScreen.BitsPerPixel;
if (deviceMode.dmBitsPerPel == 24)
deviceMode.dmBitsPerPel = 32;
_bitmapBpp = deviceMode.dmBitsPerPel;
deviceMode.dmDeviceName = string.Empty;
deviceMode.dmFields = (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_POSITION);
_bitmapHeight = deviceMode.dmPelsHeight = Screen.PrimaryScreen.Bounds.Height;
_bitmapWidth = deviceMode.dmPelsWidth = Screen.PrimaryScreen.Bounds.Width;
bool deviceFound;
uint deviceIndex = 0;
while (deviceFound = EnumDisplayDevices(null, deviceIndex, ref device, 0))
{
if (device.DeviceString == driverName)
break;
deviceIndex++;
}
if (!deviceFound) return false;
driverInstanceName = device.DeviceName;
_registryKey = Registry.LocalMachine.OpenSubKey(driverRegistryPath, true);
if (_registryKey != null)
_registryKey = _registryKey.CreateSubKey(driverMiniportName);
else
throw new Exception("Couldn't open registry key");
if (_registryKey != null)
_registryKey = _registryKey.CreateSubKey(driverDeviceNumber);
else
throw new Exception("Couldn't open registry key");
// _registryKey.SetValue("Cap.DfbBackingMode", 0);
_registryKey.SetValue("Screen.ForcedBpp", 24);
_registryKey.SetValue("Attach.ToDesktop", 1);
#region This was CommitDisplayChanges
SafeChangeDisplaySettingsEx(device.DeviceName, ref deviceMode, IntPtr.Zero, CDS_UPDATEREGISTRY, IntPtr.Zero);
SafeChangeDisplaySettingsEx(device.DeviceName, ref deviceMode, IntPtr.Zero, 0, IntPtr.Zero);
#endregion
State = MirrorState.Loaded;
return true;
}
public bool DriverExists()
{
var device = new DisplayDevice();
var deviceMode = new DeviceMode {dmDriverExtra = 0};
device.CallBack = Marshal.SizeOf(device);
deviceMode.dmSize = (short) Marshal.SizeOf(deviceMode);
deviceMode.dmBitsPerPel = Screen.PrimaryScreen.BitsPerPixel;
if (deviceMode.dmBitsPerPel == 24)
deviceMode.dmBitsPerPel = 32;
_bitmapBpp = deviceMode.dmBitsPerPel;
deviceMode.dmDeviceName = string.Empty;
deviceMode.dmFields = (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_POSITION);
_bitmapHeight = deviceMode.dmPelsHeight = Screen.PrimaryScreen.Bounds.Height;
_bitmapWidth = deviceMode.dmPelsWidth = Screen.PrimaryScreen.Bounds.Width;
bool deviceFound;
uint deviceIndex = 0;
while (deviceFound = EnumDisplayDevices(null, deviceIndex, ref device, 0))
{
if (device.DeviceString == driverName)
break;
deviceIndex++;
}
if (!deviceFound) return false;
else return true;
}
private static extern int ChangeDisplaySettingsEx(string lpszDeviceName, ref DeviceMode mode, IntPtr hwnd, uint dwflags, IntPtr lParam);
public bool Load()
{
if (State != MirrorState.Idle)
{
throw new InvalidOperationException("You may call Load only if the state is Idle");
}
var device = new DisplayDevice();
var deviceMode = new DeviceMode {
dmDriverExtra = 0
};
device.CallBack = Marshal.SizeOf(device);
deviceMode.dmSize = (short)Marshal.SizeOf(deviceMode);
deviceMode.dmBitsPerPel = Screen.PrimaryScreen.BitsPerPixel;
if (deviceMode.dmBitsPerPel == 24)
{
deviceMode.dmBitsPerPel = 32;
}
_bitmapBpp = deviceMode.dmBitsPerPel;
deviceMode.dmDeviceName = string.Empty;
deviceMode.dmFields = (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_POSITION);
_bitmapHeight = deviceMode.dmPelsHeight = Screen.PrimaryScreen.Bounds.Height;
_bitmapWidth = deviceMode.dmPelsWidth = Screen.PrimaryScreen.Bounds.Width;
bool deviceFound;
uint deviceIndex = 0;
while (deviceFound = EnumDisplayDevices(null, deviceIndex, ref device, 0))
{
if (device.DeviceString == driverName)
{
break;
}
deviceIndex++;
}
if (!deviceFound)
{
return(false);
}
driverInstanceName = device.DeviceName;
_registryKey = Registry.LocalMachine.OpenSubKey(driverRegistryPath, true);
if (_registryKey != null)
{
_registryKey = _registryKey.CreateSubKey(driverMiniportName);
}
else
{
throw new Exception("Couldn't open registry key");
}
if (_registryKey != null)
{
_registryKey = _registryKey.CreateSubKey(driverDeviceNumber);
}
else
{
throw new Exception("Couldn't open registry key");
}
// _registryKey.SetValue("Cap.DfbBackingMode", 0);
_registryKey.SetValue("Screen.ForcedBpp", 24);
_registryKey.SetValue("Attach.ToDesktop", 1);
#region This was CommitDisplayChanges
SafeChangeDisplaySettingsEx(device.DeviceName, ref deviceMode, IntPtr.Zero, CDS_UPDATEREGISTRY, IntPtr.Zero);
SafeChangeDisplaySettingsEx(device.DeviceName, ref deviceMode, IntPtr.Zero, 0, IntPtr.Zero);
#endregion
State = MirrorState.Loaded;
return(true);
}
